LAUGHLIN, Nev., Jul 26, 2010—Tropicana Entertainment will introduce an enhanced player loyalty program, TROP ADVANTAGE, on August 1 at its Tropicana Laughlin and River Palms Casinos. The program will kick-off with a concert featuring David Cassidy at the Tropicana Laughlin on July 31 and chances to roll for a $1.0 million payday during the months of August and September at both casinos. Players who obtain their new cards before August 10th ....